Revolving sash.



' invention as applied Vto a window.

No. @caliza :Patented June '7, 1904.

UNITED STATES PATENT OFFICE.

JOHNERANKLIN BLANCHARD, oE NEW YORK, N. Y.l

REvoLvlNe. SASH.

SPECIFICATION forming part of Letters Patent No. 762,123, dated June *7,1904;

Application iiled November 22', 1902. 'Serial No. 132,391. (No model.)

To t6/L zii/1,0m t may concern.:

Be it known that LJOHN FRANKLIN BLANCH- ARD, a citizen of the UnitedStates, and a resident of the city of New York, borough of Manhattan, inthe county and State of New York, have invented a new Yand ImprovedRevolving Sash, of which the following is a full, clear, and exactdescription.

My invention relates to revolving windowsashes, my more particularobject being to produce an eflicient form of revolving sash admitting ofgeneral use and possessing certain advantages hereinafter set forth.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view showing my Fig. 2 is a section upon theline 2 2 in Fig. 4 looking in the direction of the arrow. Fig. 3 is anelevation of one member of the auxiliary stile, the otherparts beingremoved; and Fig. 4 is an enlarged section upon the lines 4 4 in Fig. 3looking in the direction of the arrow.

The stiles are shown at l, the glass at 2, the fastenings therefor at 3,and the upper and lower rails at 4 and 5. Mounted within each stile l isa trunnion-plate 6, provided with screws 7 8 for holding the same inpositionV and also provided with trunnions 9, integral therewith. Alongitudinal groove 10 is provided in the edge of each stile and of eachtrunnion-block 6, this groove being continuous throughout the entirelength of the stile.

The window-facing is shown at 11 and is provided with a channel 12. Achain or equivalent suspending device 13 is provided for sustaining theweight ofV the sash in the usual manner. rllns chain preferably engagesthe trunnions 9, as indicated more particularly in Fig. 2. An auxiliarystile made in two means of rivetsA 19, these springs normally pressingagainst the flanges 15. Pins 2O are secured rigidly upon the part 16 andpass loosely through holes 20. (Shown to better advantage in Fig. 3.)Each trunnion 9 removably engages a bearing-block 22, held in place byfastenings 23 and provided with a trunnion-hole 24, as indicated moreparticularly in Figs. 2 and 3, and also engages a somewhat similarbearing-block 22, rigidly connected with the auxiliary stile 16, asshown more particularly in Figs. 2 and 4.

The members 14 are eacli provided with a4 slot 25, as shown moreparticularly in Fig. 3, for permitting the use of a side pulley in theusual manner.

Each stile 1 is provided with a hole 26, in which is mounted acylindrical spring 27 and a pin 28, the pin having a limiting-stop 29.The pin passes through a hole 30 in the bead 17 and is provided with aknob 31 for convenience in manipulation. When the knob 31 is drawninwardly, the spring-pin is withdrawn from engagement with the bead 17,and the sash may be moved, as indicated in Fig. 1. When the sash isvertical, the pressure of the leafsprings 18,by causing one portion 16of the hollow casing to move asunder from the other portion thereof,forces the bead 17 into the groove 10, thereby causing the sash to snapinto its normal position. The spring-pin 28 is moved position, the innerend of the pin traveling over the rounded surface of the bead 17 untilthe.

hole 30 is reached, whereupon the pin 28 snaps into the positionindicated in Fig. 2. The sash is therefore doubly locked, being held notonly by the bead 17 engaging the groove 10 under pressure of theleaf-springs 18, but being further held by the spring-pin 28 engagingthe hole 30. When the sash is turned at an angle to its normal position,as indicated more particularly in Fig. 1, the outer portion 16 of thestile is forced toward the window-facing 11, the two parts 16 and 14thereby having a sort of telescopic action, which will be readilyunderstood from inspection of Fig. 4. The guide-pins 20 maintain theseparts in proper relation, while permitting the slight lateral movementnecessary of the member 16. Under no conditions can the member 16 bepressed so far to the left or toward the center of the window astodisengage the two parts of the auxiliary stile, for the reason that thesash l is Centered by the extension of the pivots 9 and is thereforecomparatively free from lateral movement regardless oi' the aetionof anyother part. In other words, the sash l would be held eentrally by thepivots 9 even if the springs and the pins were removed entirely. l Thebead 17 serves as a weather-strip,effeet ively exoludingthe passage ofcold and moist air.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A revoluble sash comprising a stationarywindow-frameprovided with a channel, a metallie auxiliary stile littinginto said channel and made in two parts teleseoping eaeh other, one ofsaid parts having` flanged edges provided With holes, the other of saidparts being provided with pins engaging' said holes, springs fornormally maintaining said parts in predetermined positions relatively toeach other, and a revoluble sash member for engaging' one oi' said partsof said stile and being temporarily held in a predetermined position bythe pressure oil said stile thereon.

2. In a revolving sash, the combination of a stationary window-frameprovided with a channel, a metallic auxiliary stile itting into saidChannel and made in two parts telescoping eaeh other, one of said partshaving iianged edges, means for guiding the movements of said two partsteleseoping eaeh other, springs for normally maintaining said parts inpredetermined positions relatively to each other, and a revoluble sashmember for engaging one of said parts of said stile, said revoluble sashbeing normally held in place by the pressure of said stile thereon.

3. In a revoluble sash, the combination of a stationary window-frameprovided With a channel, an auxiliary stile slidably mounted within saidchannel and provided with bearings, a revoluble sash member providedwith a trunnion for engaging said bearings, and a longitudinal flexiblemember engaging said trunnion and eoaeting with said bearings as apivotal support for said trunnion.

In testimony whereof I have signed my name to this specification in thepresence of tWo subscribing witnesses.

J. FRANKLIN BLANCHARD.

Witnesses:

W AL'roN HARRISON, EVERARD BoL'roN MARSHALL.

